2023 TOYOTA C-HR battery replacement

1281-4. Hybrid system
C-HR_HEV_OM_Europe_OM10764E
NOTICE
■Hybrid battery (traction battery) air intake vent
● Make sure not to block the air intake vent with anything, such as a seat
cover, plastic cover, or luggage. The hybrid battery (traction battery) may
overheat and be damaged.
● When dust, etc., has accumulated in the air intake vent, clean it with a vac-
uum cleaner to prevent the vent from clogging.
● Do not get water or foreign materials in the air intake vent as this may
cause a short circuit and damage the hybrid battery (traction b attery).
● Do not carry large amounts of water such as water cooler bottles in the
vehicle. If water spills onto the hybrid battery (traction batt ery), the battery
may be damaged. Have the vehicle inspected by any authorized To yota
retailer or Toyota authorized repairer, or any reliable repaire r.
● There is a filter installed to the air intake vent. When the filter remains
noticeably dirty even after cleaning the air intake vent, filte r cleaning or
replacement is recommended. For information regarding filter cl eaning or
replacement, refer to P. 638.
● If “Maintenance required for Traction battery cooling parts. See owner’s
manual.” is shown on the multi-information display, the air int ake vent and
filter may be clogged. Refer to P. 638 for information on how t o clean the
air intake vent.

6126-3. Do-it-yourself maintenance
C-HR_HEV_OM_Europe_OM10764E
WARNING
■Chemicals in the 12-volt battery
The 12-volt battery contains poisonous and corrosive sulfuric a cid and may
produce hydrogen gas which is flammable and explosive. To reduc e the risk
of death or serious injury, take the following precautions while working on or
near the 12-volt battery:
● Do not cause sparks by touching the 12-volt battery terminals with tools.
● Do not smoke or light a match near the 12-volt battery.
● Avoid contact with eyes, skin and clothes.
● Never inhale or swallow electrolyte.
● Wear protective safety glasses when working near the 12-volt battery.
● Keep children away from the 12-volt battery.
■ Where to safely charge the 12-volt battery
Always charge the 12-volt battery in an open area. Do not charg e the 12-volt
battery in a garage or closed room where there is insufficient ventilation.
■ Emergency measures regarding electrolyte
● If electrolyte gets in your eyes
Flush your eyes with clean water for at least 15 minutes and ge t immedi-
ate medical attention. If possible, continue to apply water wit h a sponge or
cloth while traveling to the nearest medical facility.
● If electrolyte gets on your skin
Wash the affected area thoroughly. If you feel pain or burning, get medical
attention immediately.
● If electrolyte gets on your clothes
It can soak through clothing on to your skin. Immediately take off the cloth-
ing and follow the procedure above if necessary.
● If you accidentally swallow electrolyte Drink a large quantity of water or
milk. Get emergency medical attention immediately.
■ When replacing the 12-volt battery
Use a 12-volt battery designed for this vehicle. Failure to do so may cause
gas (hydrogen) to enter the passenger compartment, causing a fi re or
explosion.
For replacement of the 12-volt battery, contact any authorized To y o t a
retailer or Toyota authorized repairer, or any reliable repaire r.

6967-2. Steps to take in an emergency
C-HR_HEV_OM_Europe_OM10764E
■ If “Radar Cruise Control Unavailable See Owner’s Manual” is shown
The dynamic radar cruise control with full-speed range system i s suspended
temporarily or until the problem shown in the message is resolv ed. (causes
and coping methods: P. 365)
■ If “Radar Cruise Control unavailable.” is shown
The dynamic radar cruise control with full-speed range system c annot be
used temporarily. Use the system when it becomes available agai n.
■ Warning buzzer
 P. 687
NOTICE
■If “Maintenance required for Traction battery at your dealer.” is shown
(2ZR-FXE engine [except for Guadelope, Martinique, F. Guiana an d
Greenland])
This message indicates that the hybrid battery (traction batter y) may require
inspection or replacement. Have the vehicle inspected by any au thorized
Toyota retailer or Toyota authorized repairer, or any reliable repairer imme-
diately. Do not continue driving the vehicle, as the hybrid sys tem may
become not able to be started again.
■ If “Low 12-Volt Battery. See Owner’s Manual.” is displayed frequently
The 12-volt battery may have deteriorated. As the battery may d ischarge in
this state when left unattended, have the battery inspected by any autho-
rized Toyota retailer or Toyota authorized repairer, or any rel iable repairer.

7527-2. Steps to take in an emergency
C-HR_HEV_OM_Europe_OM10764E
M20A-FXS engine
● Use a Central Degassing type 12-volt battery (European Regulations).
● Use a 12-volt battery that the case size is same as the previous one (LN1),
20 hour rate capacity (20HR) is equivalent (45Ah) or greater, a nd perfor-
mance rating (CCA) is equivalent (286A) or greater.
• If the sizes differ, the 12-volt battery cannot be properly se cured.
• If an improper 12-volt battery is used, battery performance ma y decrease
and the hybrid system may not be able to restart.
• If the 20 hour rate capacity is low, even if the time period w here the vehi-
cle is not used is a short time, the 12-volt battery may discha rge and the
hybrid system may not be able to start.
● Use a 12-volt battery with a handle. If a 12-volt battery without a handle is
used, removal is more difficult.
● After replacing, firmly attach the following items to the exhaust hole of the
12-volt battery.
● For details, consult any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
Exhaust hole plug
Exhaust hole
Exhaust hose
• Use the exhaust hose that was
attached to the 12-volt battery before
replacing and confirm that it is firmly
connected to the hole section of the
vehicle.
• Use the exhaust hole plug included
with the 12-volt battery replaced or
the one installed on the 12-volt bat-
tery prior to the replacement.
(Depending on the 12-volt battery to
be replaced, the exhaust hole may be
plugged.)

7547-2. Steps to take in an emergency
C-HR_HEV_OM_Europe_OM10764E
WARNING
■After recharging the 12-volt battery (M20A-FXS engine)
Have the 12-volt battery inspected at any authorized Toyota ret ailer or
Toyota authorized repairer, or any reliable repairer as soon as possible. If
the 12-volt battery is deteriorating, continued use may cause t he 12-volt
battery to emit a malodorous gas, which may be detrimental to t he health of
passengers.
■ When replacing the 12-volt battery
● When the vent plug and indicator are close to the hold down clamp, the
battery fluid (sulfuric acid) may leak.
● For information regarding 12-volt battery replacement, contact any autho-
rized Toyota retailer or Toyota authorized repairer, or any rel iable repairer.
● M20A-FXS engine: After exchanging, securely attach the exhaust hose
and exhaust hole plug to the exhaust hole of the exchanged 12-v olt bat-
tery. If not properly installed, gases (hydrogen) may leak into the vehicle
interior, and there is the possible danger of the gas igniting and exploding.
NOTICE
■When handling jumper cables
When connecting the jumper cables, ensure that they do not beco me entan-
gled in the cooling fans, etc.
■ To prevent damaging the vehicle (M20A-FXS engine)
The exclusive jump starting terminal is to be used when chargin g the 12-volt
battery from another vehicle in an emergency. It cannot be used to jump
start another vehicle.

7728-1. Specifications
C-HR_HEV_OM_Europe_OM10764E
*: The fluid capacity is the quantity of reference.
If replacement is necessary, contact any authorized Toyota reta iler or
Toyota authorized repairer, or any reliable repairer.
Electrical system (12-volt battery)
Battery
Specific voltage reading at
20 C (68F):
Specific gravity reading at
20 C (68F):
12.0 V or higher
(Turn the power switch to OFF and turn
on the high beam headlights for 30 sec-
onds.)
If the voltage is lower than the standard
value, charge the battery.
1.25 or higher
If the specific gravity is lower than the
standard value, charge the battery.
Charging rates
Quick charge
Slow charge
15 A max.
5 A max.
Transmission
Fluid capacity*
2ZR-FXE engine
3.6 L (3.8 qt., 3.2 Imp.qt.)
M20A-FXS engine
3.8 L (4.0 qt., 3.3 Imp.qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
■ Transmission fluid type
Using transmission fluid other than the above type may cause ab normal
noise or vibration, or ultimately damage the transmission of yo ur vehicle.